Optimization of the Spray Drying Operating Conditions for Producing the Powder Mixture of Gum Arabic and Maltodextrin

2017 ◽  
Vol 13 (8) ◽  
Author(s):  
Duc Quang Nguyen ◽  
Sabah Mounir ◽  
Karim Allaf
Keyword(s):  
Spray Drying ◽  
Air Temperature ◽  
Powder Mixture ◽  
Gum Arabic ◽  
Feed Solution ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Spray Dryer ◽  
Optimal Parameters ◽  
The Impact

AbstractThe powder mixture of gum arabic and maltodextrin was produced by spray drying. The inlet air temperature of spray dryer was varied from 160 °C to 260 °C and the maltodextrin content was varied from 0 to 50 % in the feed solution with the concentration of 42.5 % (w/v) total solids by weight. The properties of the finished product were characterized to examine the impact of changes in these operating parameters. The results showed that: the inlet air temperature had a stronger influence on the properties of finished product than the MD/GA ratio, whereas the feed rate was more clearly affected by the MD/GA ratio. Two optimal parameters obtained include MD/GA ratio equal to 0.615 and the inlet air temperature of spray dryer Te = 258 °C.

scholarly journals Predictive Modelling of Wellhead Corrosion due to Operating Conditions: A Field Data Approach

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Chinedu I. Ossai
Keyword(s):  
Corrosion Rate ◽  
Field Data ◽  
Oil And Gas ◽  
Multiple Linear Regression Model ◽  
Predictive Modelling ◽  
Operating Conditions ◽  
Experimental Results ◽  
Operating Parameters ◽  
Oil And Gas Fields ◽  
The Impact

The flow of crude oil, water, and gas from the reservoirs through the wellheads results in its deterioration. This deterioration which is due to the impact of turbulence, corrosion, and erosion significantly reduces the integrity of the wellheads. Effectively managing the wellheads, therefore, requires the knowledge of the extent to which these factors contribute to its degradation. In this paper, the contribution of some operating parameters (temperature, CO2 partial pressure, flow rate, and pH) on the corrosion rate of oil and gas wellheads was studied. Field data from onshore oil and gas fields were analysed with multiple linear regression model to determine the dependency of the corrosion rate on the operating parameters. ANOVA, value test, and multiple regression coefficients were used in the statistical analysis of the results, while in previous experimental results, de Waard-Milliams models and de Waard-Lotz model were used to validate the modelled wellhead corrosion rates. The study shows that the operating parameters contribute to about 26% of the wellhead corrosion rate. The predicted corrosion models also showed a good agreement with the field data and the de Waard-Lotz models but mixed results with the experimental results and the de Waard-Milliams models.

Effect of the operating parameters on the separation of metal chelates using low pressure reverse osmosis membrane (LPROM)

2000 ◽  
Vol 41 (10-11) ◽  
pp. 135-142 ◽  
Author(s):  
Z. Ujang ◽  
G.K. Anderson
Keyword(s):  
Factorial Design ◽  
Metal Removal ◽  
Feed Solution ◽  
Metal Chelates ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Operating Pressure ◽  
Permeate Flux ◽  
Experimental Conditions ◽  
Central Composite

This paper describes an investigation on the effect of operating parameters on the separation of metal chelates using LPROM. The objective of this study was to optimise the process of metal chelates removal by a LPROM using statistical factorial design. Factorial experiment by statistical design was applied, in which a central composite factorial design (half replicate) was used, then followed up by a star design to give a central composite factorial design. A bench-scale spiral wound configuration of sulphonated polysulphone LPROM was used at various operating conditions, i.e. operating conditions, solute concentrations, EDTA, pH and temperature. It has been shown experimentally that the effect of pressure is non-linear with respect to percentage of metal removal at different concentrations of metal ions in the feed solution. Observation of the response surface implies that the operating pressure was not the significant parameter in determining the percentage of zinc removal in the LPROM. The operating pressure, temperature and concentration of EDTA in the feed solution were the most significant parameters for permeate flux variation. It can also be concluded that for a given set of feed and experimental conditions, permeate flux increased linearly with operating pressure and temperature. The other parameters, i.e. the concentration of zinc in the feed solution and pH, were not statistically significant.

scholarly journals Technical Parameters Affecting the Spray Drying of Roselle (Hibiscus Sabdariffa) Powder

2020 ◽  
Vol 14 (4) ◽  
pp. 2407-2416
Author(s):  
Nguyen Phuoc Minh
Keyword(s):  
Whey Protein ◽  
Spray Drying ◽  
Air Temperature ◽  
Feed Rate ◽  
Gum Arabic ◽  
Whey Protein Concentrate ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Hibiscus Sabdariffa ◽  
Protein Concentrate

Roselle (Hibiscus sabdariffa) was a member of Malvaceae family. Its calyxes had bright red color due to presence of anthocyanin with an excellent antioxidant property. Raw roselle (Hibiscus sabdariffa L.) calyx was highly perishable due to its high moisture content. In order to diversify products from this plant, this research evaluated the possibility of spray drying for roselle extract into dried powder for long-term consumption. We focused on the effect of sugar alcohols (mannitol, sorbitol, isomalt, xylitol, erythritol) at 8%, carrier agents (maltodextrin, gum arabic, glutinous starch, whey protein concentrate, carboxymethyl cellulose) at 12%, operating parameters of spray dryer (inlet/outlet air temperature, feed rate) on physicochemical quality (bulk density, solubility, total phenolic content, total flavonoid content, anthocyanin content) of rosselle powder. Results showed that the optimal spray drying variables for rosselle powder should be 8% isomalt, 12% whey protein concentrate, inlet/ outlet air temperature 140/85oC/oC, feed rate 12 ml/min. Based on these optimal conditions, the highest physicochemical attributes of the dried roselle calyx powder would be obtained.

scholarly journals Effect of Drying Temperature of Small Scale Spray Dryer on Physical Properties of Coffee Powder

2020 ◽  
Vol 28 (4) ◽  
Author(s):  
Joko Nugroho Wahyu Karyadi ◽  
Dwi Ayuni ◽  
Tsania Ayu Rohani ◽  
Devi Yuni Susanti
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Spray Drying ◽  
Product Yield ◽  
Feed Solution ◽  
Small Scale ◽  
Inlet Temperature ◽  
Spray Dryer ◽  
Drying Process ◽  
High Product Yield

Nowadays, coffee has become one of the most favorable commodities for beverages, flavoring as well as for cosmetic industries. In Indonesia, coffee becomes more popular, especially among youngsters. In this study, the spray drying process was evaluated, giving the potential of how simple spray dryer can help local farmers of Indonesia to produce their coffee powders. One small scale of spray dryer was constructed with the total dimensions of 2.85 x 0.64 for length x width, with a height of 2.32 m. The spray dryer was equipped with a digital thermo regulator, the pneumatic nozzle system, and 4 finned heaters with the power of 2700 watt for each. The spray drying constructed was revealed to be able to produce coffee powders with fine quality. The inlet temperature of the drying chamber, as well as the initial Brix content of feed solution, were proven to affect the physical properties of powder produced such as moisture content, product yield, and solubility. The final moisture content of powders was ranged from 3 - 7% db, with the high product yield of the drying process, which could reach up to 70%.

Influence of Mining Operating Conditions on Fault Behavior

2014 ◽  
Vol 59 (3) ◽  
pp. 691-704 ◽  
Author(s):  
Zbigniew Burtan ◽  
Andrzej Zorychta ◽  
Jerzy Cieślik ◽  
Dariusz Chlebowski
Keyword(s):  
Finite Element Method ◽  
Operating Conditions ◽  
Operating Parameters ◽  
The Finite Element Method ◽  
Mining Operations ◽  
Fault Behavior ◽  
Caving Zone ◽  
Energy Dissipated ◽  
The Impact ◽  
Impact Of Mining

Abstract This article concerns numerical modeling of the impact of mining operations on fault behavior, carried out on the basis of a calculation program based on the finite element method. The calculations and their graphic results related to the reactions of vertical discontinuity on the mining operations that run along its boundary under changing operating parameters, such as geometry of the field and direction of mining with respect to the fault, as well as the method of liquidation of the caving zone. The behavior of the fault was analyzed based on distributions in the plane of shear stress and slip, together with their range and energy dissipated due to friction. The results of numerical calculations made it possible to draw conclusions on the impact of faults and the impact of operating conditions of mining in their vicinity on the level of seismic hazard.

The optimization of spray-drying process for the development of apricot powder using response surface methodology

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Omar Bashir ◽  
Syed Zameer Hussain ◽  
Tawheed Amin ◽  
Nusrat Jan ◽  
Gousia Gani ◽  
...  
Keyword(s):  
Response Surface ◽  
Spray Drying ◽  
Air Temperature ◽  
Flow Rate ◽  
Gum Arabic ◽  
Feed Flow Rate ◽  
Drying Process ◽  
Content Type ◽  
Independent Variables ◽  
Pharmacological Significance

PurposeApricots are not only nutritionally-rich but also possess pharmacological significance owing to their high antioxidant activity, and they are rich in vitamins, fibers, bioactive phytochemicals and minerals. Because of its immense organoleptic characteristics, apricot juice (AJ) is well accepted; however, it has a limited shelf-life, thereby demanding it to be converted into other shelf-stable form. One of the approaches is converting this juice into dehydrated powder. Amongst the various dehydration techniques available, spray drying is usually preferred; however, it involves the use of several independent variables, which need to be optimized, thus prompting to optimize the process to obtain spray dried apricot powder (SDAP) with improved quality.Design/methodology/approachThe spray-drying process of apricot juice was done using the response surface approach. The process variables included the inlet air temperature of 135–220°C, gum arabic concentration of 4–25%, feed flow rate of 124–730 mL/h, feed total soluble solids (TSS) of 10-30°Brix and atomization speed of 11,400–28,000 rpm. The dependent responses were powder yield, hygroscopicity, solubility, moisture content, carotenoids (CT), ascorbic acid (AA), radical scavenging activity (RSA), lightness, wettability, bulk density, particle density and porosity.FindingsAmongst all independent variables, inlet air temperature had most predominant impact on all the investigated responses. The optimum processing conditions for development of apricot powder with optimum quality were 190°C inlet air temperature, 18.99% gum arabic, 300.05 mL/h feed flow rate, 24°Brix feed TSS and 17433.41 rpm atomization speed. The experimental values were found to be in agreement with the predicted values, indicating the suitability of models in predicting optimizing responses of apricot powder. Flowability as Carr's index (CI) (22.36 ± 1.01%) suggests fair flow of powder. Glass transition temperature of powder was 57.85 ± 2.03°C, which is much higher than that of ambient, suggesting its better shelf stability.Originality/valueTo the best of author's knowledge, very limited or very few studies have been carried out on the spray-drying process for the manufacture of SDAP. The results of this investigation will open up new horizons in the field of food industry in the Union Territory of Jammu and Kashmir, India or elsewhere in the apricot-growing areas of India.

Microencapsulation of Gram-Negative Bacteria by Spray Drying

2010 ◽  
Vol 6 (2) ◽  
Author(s):  
Caiyuan Yu ◽  
Dongdong Han ◽  
Wei Wang
Keyword(s):  
Survival Rate ◽  
Spray Drying ◽  
Orthogonal Experiment ◽  
Gum Arabic ◽  
Operating Conditions ◽  
Gram Negative Bacteria ◽  
Feed Flow Rate ◽  
Gram Negative ◽  
Storage Performance ◽  
Single Factor Analysis

This paper presents an experimental study on the preparation of gram-negative bacteria microcapsules by spray drying. Effects of operating conditions on the bacteria survival rate were examined by single factor analysis. Through orthogonal experiment, appropriate conditions were determined as 160°C of the inlet air temperature, 12.5 ml/min of the feed flow rate, 1:9 of the ratio between gum arabic and maltodextrin, and 50 ml of fluid nutrient medium with the bacteria. The bacteria survival rate reaches 84.57% associated with above conditions. Examination of storage performance shows that after preserving in plastic film bag for 6 months under ambient temperature from 18°C to 30°C, quantity of the viable gram-negative bacteria was increased by 148%, which was significantly improved compared to those inoculated from laboratory.

scholarly journals Sensory evaluation of a flour tortilla enriched with microcapsules of beet (Beta vulgaris L.)

2020 ◽  
pp. 7-9
Author(s):  
Sasi Elibeth Martini-Morales ◽  
Abigail Reyes-Munguía
Keyword(s):  
Spray Drying ◽  
Sensory Evaluation ◽  
Beta Vulgaris ◽  
Gum Arabic ◽  
Wall Material ◽  
Antioxidant Compounds ◽  
Spray Dryer ◽  
Men And Women ◽  
Age Range

Beets (Beta vulgaris L.) have antioxidant compounds, with a characteristic color which is due to the presence of betalains. Microencapsulation is a technique used to protect aromas, flavors, colors and nutritional and antioxidant components. The objective of this work was to microencapsulate beet juice (Beta vulgaris L.) by spray drying using gum arabic as wall material, to later elaborate a flour tortilla incorporating the microencapsulated antioxidants from beet juice and evaluate it sensory. The microencapsulation process was carried out using a Mini Spray Dryer. The sensory evaluation used was descriptive and was carried out on 50 panelists (men and women) with an age range of 18 to 23 years. The flour tortilla was accepted by the panelists.

scholarly journals Wall deposition experiments in a new spray dryer

2018 ◽  
Author(s):  
Timothy A. G. Langrish ◽  
Xing Huang ◽  
Chao Zhong
Keyword(s):  
Spray Drying ◽  
Salt Solution ◽  
Milk Powder ◽  
Skim Milk ◽  
Skim Milk Powder ◽  
Solid Content ◽  
Operating Conditions ◽  
Spray Dryer ◽  
Wall Deposition

Wall deposition tests have been conducted on a new spray-drying sytem. Solutions of salt and skim milk powder have been dried with different inlet temperatures (170 °C and 230 °C) and solid contents (8.8 wt% and 30 wt%). The experiment showed that increasing the temperature caused an decrease in the amount of deposition for salt solution, but an increase for skim milk. The experiments also showed that a higher solid content caused an increase in deposition. The trends agreed with the studies using a conventional spray dryer, but the amount of deposition appeared to be lower in the new spray dryer at the same operating conditions Keywords: Spray drying; wall deposition

scholarly journals PRINCIPLES OF CONSTRUCTION OF THE GENERALIZED MATHEMATICAL MODEL OF THE HYDRAULIC EXTINGUISHER OF OSCILLATIONS OF THE PASSENGER CAR

2021 ◽  
Vol 1 (38) ◽  
pp. 173-184
Author(s):  
I. Shcherbyna
Keyword(s):  
Mathematical Model ◽  
Operating Conditions ◽  
Working Fluid ◽  
Operating Parameters ◽  
Hydraulic Systems ◽  
Passenger Cars ◽  
Passenger Car ◽  
Periodic Movement ◽  
Depth Analysis ◽  
The Impact

The study of the processes associated with the use of working fluids in the elements of hydraulic drives was preceded by studies of the unsteady periodic movement of the working fluid in the pipelines of hydraulic systems. Such processes take place in hydraulic drives and their elements, and are associated with the compressibility of the working fluid. The stability of the operation of hydraulic valves, which are supplied to hydraulic systems in order to maintain, within the required limits, pressures or flow rates, is also largely predetermined by non-stationary hydro mechanical processes occurring in the pipelines of these systems, channels and chambers of hydraulic devices. The peculiarities of the working processes of passive vibration dampers of passenger cars include the interaction of the working fluid with moving parts and its flow through the channels and through the calibrated holes with local artificial resistance. For in-depth analysis of changes in operating parameters, it is necessary to use a mathematical model that should reflect the processes that occur during the operation of the hydraulic device. In the presented article the generalized mathematical model of the hydraulic damper of fluctuations of the passenger car of the НЦ-1100 type is developed. This model takes into account the special operating conditions of the hydraulic shock absorber, which allows you to study the impact of operating parameters on the performance of the device.

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